Oil-burner.



PATENTS SEPT. 22, 1903.

W. F. HOGAN. OIL BURNER.

APPLIUATIOH PILED MAY'M, 1903.

N0 MODEL.

Witnesses? cams PEYERS 60.. unburned WASHING-TO city and county of San Francisco, State of UNITED STATES OIL-BU srnoIFIcATIoN forming part of Letters Pat Patented September 22, 1903.

PATENT OFFICE.

CO, CALIFORNIA, ASSIGNDR OF ONE SAN FRANCISCO, CALIFORNIA.

RNER.

ent No. 739,546, dated September 22, 1903.

- Application filed May 14, 1908. Qerial No 157,113. (No model.)

To aZZ whom it may concern: Be it known that/I, WILLIAM F. HOGAN, a citizen of the United States, residing in the California, have invented an Improvement in Oil-Burners; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to an improvement in apparatus for burning hydrocarbon oils.

It consists of concentric steam and oil in} let pipes with discharge-passages atthe'ends, a' cylindrical mixing-chamber into which the steam and oil are delivered, a return-bend connected with the outer end of said chamber, having a discharge'or burner opening in its outer convexity, and a return pipe or passage below and parallel with the mixing-chamber and connected with the mixing-chamber contiguous to the oil and steam inlets, where by the heavy portions which may settle are returned continuously intothe mixing-chamher.

It also comprises details of constructions, which will be more fully explained by refs erence t0 the accompanying drawings, in

which Figure 1 is a side elevationand partialsection. Fig. 2 is an enlarged transverse section through w of Fig. 1.

As shown in the drawings, A is an oil-inlet pipe having a suitable controlling-valve at the inlet end, as at 2, and the connection through which oil is delivered through said valve, as at 3.

Surrounding the pipe A and concentric therewith is a larger pipe 4. This pipe has connected with one side of it a steam or air valve, as at 5, through which steam or air is. admitted to surround the pipe A. A suitable reducer and securing means are fitted around the pipe A between its valve and the coupling 6, with which the steam or air pipe connects to form a tight joint, as at 7. The inner end of the oil-pipe A is closed, as shown, andhas holes or perforations made radial in its sides, as at 8, and through these holes or perforations the oil under such pressure as may be brought upon it is discharged. Within the pipe 4 is a collar, which may either be fitted upon the pipe Aor may be formed upon it,

so as to approximately fill the outer pipe 4. Through this collar are made slits or openings, as at 9, and these slits or openings register with the radial discharge-passages 8 of the pipe A, so that as the 'oil is discharged outwardly from the pipe A it is caught by the column of steam or air under pressure and is pulverized and discharged into the mixingchamber, which consists of a cylindrical pipe, as at 10. To the outer end of this pipe 10 is coupled a return-bend, as at 11, and this bend curves downwardly from the pipe 10 and has coupled with it a pipe 12, which is substantially parallel with the mixing-chamber 10. By means ofan elbow 13 the inner end of this pipe 12 is connected with the T-coupling 14, to which the outer end of the pipe at is also connected, as shown. Substantially centrally of the return-bend 11 is made the slot 15, through which the oil and steam or air in their mixed condition are discharged and at which point the ignition takes place.. The mixing of steam and oil is often liable to be incomplete and notall of the oil isdischarged 7 5 through the burner-slot 15 or any equivalent burner.

It is the object of my present invention to return the heavy portions which are not so easily pulverized and reduced to the proper 8o condition for combustion and to prevent any accumulation of such heavy portions. Therefore while the lighter portions which are properly pulverized or vaporized will be continually, passing out through the burner-slot 3 5 15 the heavier portions, or those which are not thoroughly vaporized or mixed, will be returned through the pipe 12 and delivered again into the mixing-chamber 10, where they will be again subjected to the action of the steam and heat and again carried forward to the burner-slot and will eventually be brought into the condition to be discharged and'ignited.

The action of the apparatus is similar to 5 that of an injector. The steam-jets deliver through the holes or passages 9 in the line of the mixing-chamber l0 and inject everything into that chamber, and it acts also in a manner similar to an injector, producing a certain ioo reduction of pressure within the pipe 12 and serving to draw any oil or material which may collect in that pipe through the elbow 13 and into the coupling 14, where it is again in line to be acted on by the jets of steam passing through the openings 9. In this manner, if not sufficiently heated, pulverized, or vaporized in its first passage through the mixer 10, it will pass through the returnbend 11 into the pipe 12 and by the suction and injector action of the steam-jets will be returned to be again submitted to the steam until it is in proper condition for final ignition.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination in an oil-burner of concentric oil and elastic-fluid conductors, radial passages made at the closed end of the oil-conductor, steam-passages discharging in line with the pipe and at right angles with the oil-discharge passages, a mixing-chamber in line with the jet-dischargers, a burneropeningconnected with the outer end of the mixing-chamber, and a return-pipe connecting the outer and inner ends of the mixingchamber.

2. The combination in an oil-burner of an inner oil-pipe, with controlling valve having a closed inner end, and radially-disposed discharge-passages, a surrounding pipe with means for admitting steam or elastic fluid thereto, a collar within the outer pipe surrounding the oil-pipe anterior to the oil-discharge openings, said collar having passages through which steam is discharged in the line of the pipe and transversely to the oil-discharge passages, a mixing-chamber in line with said discharge into which the oil and steam are injected, a downwardly-curved return-bend at the outer end of the mixingchamber having a burner-openingin its outer curvature, a return-pipe connected with the lower part of said bend and substantially parallel with the mixing-chamber and connections between the inner end of said returnpipe and the receiving end of the mixingchamber whereby material is returned into the line of the steam-jets.

3. The combination in an oil-burner of concentric valve-controlled, oil and steam inlet pipes, openings in the inner contiguous ends of the pipes through which the oil is delivered radially into the path of the direct steam- 

